Discharge nipple for collapsible tubes



Feh'LlBZS.

M. FALK DISCHARGE NIPPLE FOR COLLAPSIBLE TUBES Filed Aug. 21. 1925 IPatented Feb. 7, 1928.

UNITED, STATES.

I V V 1,658,233 PATENT OFFICE.

MAX FALK, OF LEOMINSTEB, MASSACHUSETTS, ASSIGNOR TO BAY STATECOLLAPSIBLE TUBE COMPANY, OF LEOMINSTER, MASSACHUSETTS, A CORPORATION OFMASSA- DISCHARGE NIPPLE FOR COLLAPSIBLE TUBES.

Application filed August 21, 1925. Serial No. 51,694.

" This invention relates to a device through which the contents of acollapsible tube can be discharged.

'The principal objects of the invention are to provide a discharge valvefor this pur pose so arranged that the paste in the tube will not dry onthe surfaces thereof and consequently it will always be ready for use;to provide this in'the form of a rubber l0 nipple having a surroundingflange adapted to be held on the inside of'the top of the usual metalliccollapsible tube in such a way the act of discharging a ribbon of paste;Fig. 2 is a plan of the same on enlarged scale; and V Fig. 3--is anenlarged longitudinal central sectional view.

I p y flexible metallic tube 10 adapted to contain tooth paste, shavingcream, or anyother article in paste-form and designed to discharge it ysqueezing of the collapsible tube. This is made in the ordinaryformexcept that the outlet. end, while provided with the usual end piece 11of circular form.

0 and somewhat heavier construction than of comparatively simple form.It is fectly cylindrical in shape and without any screw threads-0r otherprojections, either inside -or outside, "resulting in a saving of metal.I v

The particular feature of this is a rounded rubber nipple 14 having aslit 15 preferably in the end thereof. This: slit is merely a cut clearthrough the. rubber but no material neck 16 fitting'in the nozzle 12 andit an integral. annular flange 17 adapted to fitainsttheinnersurfaceofthetnpli oftube. this in position-and bodiment ofthis invention and shown. in,

the invention to an ordinary.

the side walls of the tube, has anozzle 12' per-.

7 nnisple out of is removed. The nipple has a'eontraetedsecure theflange 17 to the wall 11 by any 5 desired means, but as a matter offact, as Wlll appear, it is not really necessary to do that. This isdone mostly for additional safety.- After the parts are in position thetube is filled from. the bottom and closed along the lower end 20 in theusual way.

Now in the use of the device the tube is operated in the usual way toexert pressure on the paste within. This pressure results \Il forcingthe paste out through the valve or slit 15 in the formof athin ribbon ofa w dth corresponding to the length of this sl1t. Experience has shownthat immediately after the pressure is removed the valve or slitentirely closes. The extra paste can be wiped off and there will be nopaste left in sight. The slit closes automatically and tightly, its twoout surfaces come firmly into contact with each other and there areno 7surfaces between which, or on which, the paste can harden enough'topreventopening immediately upon the exertion of pressure in the mannerabove described. Thus, after leaving it for days or weeks at a time itis found to be in perfect working order all 3 the time.

The reason for stating that it was not absolutely necessary to securethe flange 17 to the inside of the top 11 is that when pressure isexerted,'it acts against this flange 17 throughout the surface and holdsit firmly against thev inner side of this top which isv usually indentedwithlet-tering. The pressure itself holds the flange in osition so thatthere is no danger of the mpple being forced out of position by thepressure of the paste inside.

This constitutes a very neat and sanitary ar ent. There is no metalliccover to be 10%, and no danger of the opening'get- 'tingj filled withthe paste and hardemng so as to prevent immediate operation upon theexertion of pressure, on the paste in the tube There is no dangerofforcing the dposition and the e ense is 0 need instea of being increAlthough I have illustrated and dwcrib'ed only. a single embodiment ofinvention, 7 I am aware of the fact-that modifications can be madetherein by any person skilled 5 in the art without'departing from thescope of'the invention as expressed th 1n 8 0 herefore, I do not wish-mbe m all the details of construction herein shown and described but whatI do claim is The combination with a collapsible nie tallic paste tubehaving a conical top formed with a valve slit for the discharge of thepaste, and an integral thin conical flange 0 inside the tube bearingagainst and. coverlng the inner conical surface of said top extending tothe inner side walls, and adapted to be pressed against the whole areaof said top by paste to hold it in position.

In testimony whereof I have hereunto afiixed m signature.

7 MAX FALK.

